Molding-machine.



J. L. JOHNSON.

MOLDING MACHINE. APPLICATION FILED JULY 23, 1910.

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Gum,

J. L. JOHNSON.

MOLDING MACHINE.

APPLICATION TILED JULY 23, 1910,

Patented Aug. 22, 1911.

4 sums-sum 2.

J. L. JOHNSON.

MOLDING MACHINE.

APPLIOATION nun JULY 23, 1910.

1,001,528. Patented Aug.22,1911.

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s I W 5 \m w 1%1 m q q My] Q 11 1 01% $3 .g\ 1 w- 1 Gum,

COL MBIA I'LANOIJRAPII $0., \VAS c7 J. L. JOHNSON.

MOLDING MACHINE.

APPLICATION FILED JULY 23, 1910.

1,001,528. Patented Aug. 22, 1911.

4 SHEETS-SHEET 4.

$3 M\ Q 1:1 1:1 I l 1:1 E]

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JACOB L. JOHNSON, O15 HEREFORD, TEXAS.

MOLDING-MACHINE.

To all whom it may concern:

Be it known that I, Jacoia L. JonNsoN, a citizen of the United States, residing at Hereford, in the county of l)0t1f Smith and State of Texas, have invented new and useful Improvements in ltlolding-Machines, of which the following is a specification.

This invention relates to in'iprovenumts in molding machines and more particularly to the type employed for molding tiling.

One object of the invention is the provision of a molding machine comprising a stationary mold section, and a movable mold section, and means for automatically actuating the movable mold section to move into and out of engagement with the stationary mold section.

Another object is the provision of a molding machine provided with a movable mold section and a power shaft for actuating the said mold section and means to ell'ect disengagement between the power shaft and a driving mechanism when the movable mold section is at a certain position.

A further object is the provision of a means for automatically reciprocating the movable mold section.

A still further object is the provision of a molding machine provided with a plurality of mold sections arranged on an endless carrier.

.Vith these and other objects in view, which will more fully hereinafter appear, the present invention consists in certain novel details of construction and arrangement of parts, hereinatt'ter fully described, illustrated in the accompanying drawings, and more particularly pointed out in the appended claims; it being understood that various changes in the form, proportion, size, and minor details of the device may be made, within the scope oi. the appended claims, without departing from the spirit or sacrificing any of the advantages oil? the invention.

In the accoi'npanying drawings, forming part of the specification:Figure 1 is a trout elevation of the device. Fig. 2 is a sectional end View on the line 2-2 of Fig. 1. Fig. 3 is a detail vertical section of the upper end portion of the device. Fig. t is a plan view of the device. Fig. 5 is a detail sectional end View of the mold sections, core,

Specification of Letters Patent.

Application filed July 23, 1910.

Patented Aug. 22, 1911.

Serial No. 573,440.

and support for the reciprocating mold sec tion. Fig. 6 is a plan view of aportion of one of the conveyor chains. Fig. 7 is a dctail plan of one of the guides for the reciprocating mold section. Fig. 8 is a detail plan View of the bushing, in which the actuating screw is mounted. Fig. 9 is a side ele- 'ation of the bushing. Fig. 10 is adetail perspective oi the shifting member. Fig. 11 is a detail front elevation of the core guide.

Similar numerals of reference are employed to designate corresponding parts throughout.

The device includes in its construction an oblong base frame the opposite sides of which are designated by the numeral 5 and the opposite ends by the numeral 6. Rising from the corners at one end of the base frame are uprights 7, and rising from the medial portion of the sides of said :trame are uprights 8 corresponding in length to the length of the uprights 7. The uprights 7 and 8 are connected at their upper ends by side sills 9 extciuling longitudinally of the frame, and are further connected by transversely disposed end sills 10. Rising from the opposite end portions of the side sills 9 are standards 11 and 19, the upper ends of which are connected by longitudinally disposed beams 13 and 14-, and are further connected by transversely disposed beams 1:) and 16. The beams 15 and 16 are disposed a trifle below the beams 13 and 1-1land are provided with boxings in which are journaled the opposite end portions of a shaft 1.7. The opposite end portions of the shaft 17 extend beyond the outer sides of the uprights, and formed in one end ol. the shaft 17 is a circular groove 18.

Journaled on the shaft 17 is a fly wheel 19, the said lly wheel being provided with a hub 20 having a radial opening through which extends a set-screw 21, the inner end of which is arranged in the groove 18, the set-sercw serving to prevent: endwise movement of the fly wheel on the shaft 17. Journaled on the shaft 1.7 and adjacent to the inner side of the [1y wheel 19 is a pulley '22. Connection between the hub of the pulley and hub oi the fly wheel is established by means of pins 23, the opposite end portions of which are arranged in alining longitudinal openings .tormed in the opposed ends of the hubs of the fly wheel and pulley. The end portion of the hub of the pulley opposite to the end connected with the hub of the fly wheel is provided with a clutch surface. Slidingly fitted on the shaft 17 between one of the boxings thereof ant the clutch surface of the pulley is a clutch collar 24-, and positioned between one end of the clutch collar and the adjacent boxing is a thrust spring 25 which yieldingly holds the surface of the clutch collar in engagement with the clutch surface of the pulley. It will be understood of course that the clutch collar 24 is splined on the shaft 17, so that when in engagement with the pulley and the latter rotated by a suitable belt rotary movement will be imparted to the shaft 17 The opposite end portion of the shaft '17, or that end remote from the end. of the fly wheel and pulley is provided with a collar 26, the surface of which bears on the adjacent boxing and prevents endwise movement of the shaft in one direction. Endwise movement of the shaft in the opposite direction is prevented by means of a pair of hooks 27 and 28, the inner end portions of which are secured to the boxing and the outer end portions of which bear on the outer surface of the collar 26.

Journaled on the shaft 17 and adjacentto the opposed inner surfaces of the boxings for the said shaft are bevel gears 29 and 30, the said bevel gears being provided with hubs 30 and 31, the opposite ends of said hubs extending beyond the opposite faces of the said bevel gears 29 and 30. The outer end portions of the hubs 30 and 31 are pro vided with circular grooves 32 and 33, and secured to the upper sides of the boxings for the shaft 17 are the end portions of hooks 34 and 35, the opposite end portions of which are arranged in the grooves 32 and 33, and serve to prevent endwise movement of the bevel gears 29 and 30 on the shaft 17. The opposite end portions of the hubs 31 and 32 are provided with clutch surfaces 36, the function of which will appear later Splined on the shaft 17 and between the bevel gears 29 and 30 are collars 37 and 38, the outer ends of which are provided with clutch surfaces 39 to engage with the clutch surfaces 36 of the bevel gears 29 and 30. Keyed to the shaft 17 and between the inner ends of the collars 37 and 38 is a worm 40, the function of which will presently appear.

Positioned on the medial portions of the upper surfaces of the longitudinally disposed beams 13 and 14 are boxings 41 and 42 and journaled in the said boxings are the opposite end portions of a shaft 43. Keyed to the intermediate portion of the shaft 43 is a worm gear 44, the teeth of which mesh with the worm 40.

By reference now to Figs. 1, 3 and 4 of the drawings it will be seen that connecting the collars 37 and 33 is a shifting m'ember,in the form of a U-shaped yoke, the opposite limbs of which are designated by the numerals 45 and 46. The limbs 45 and 46 are reduced in width from the medial portions to the free ends thereof, and formed in the widened portions of the limbs, are sockets 47, which receive the outer end portions of the collars 37 and 38. The yoke is prevented from disengagement with the collars by means of straps 43 which extend transverse the upper end portions of the sockets and bear on a portion of the peripheries of the collars 37 and 38. The limbs 45 and 46 extend upwardly to points beyond the upper side of the worm gear 44. Formed on the shaft 43 and adjacent to the worm gear 44 are oppositely disposed flattened portions 49, best shown in Fig. 3. The yoke is additionally supported and held against rotation on the shaft 17 by means of a transversely disposed U-shaped strap iron 13, the opposite limbs of which are secured to and depend from the beams 13 and 14 and the relatively wide media-l portion of which bears on the corresponding portion of the yoke.

The yoke actuating member comprises a U-shaped arm, the opposite limbs of which are designated by the numerals 50 and 51. Slidingly fitted between the arms 50 and 51 and arranged adjacent to the connected ends of said arms is a draw head 52. The draw head 52 is provided with a semi-circular seat, which cooperates with the inner end of the 'U-shaped member to provide a central opening for the reception of a shaft or axle 53. That portion of the arm overlying the axle is slotted longitudinally as shown at 54, in Fig. 4 of the drawings. Arranged on the shaft 51 and extending through the slotted portion 54 is a roller 55, the function of which will appear later. Positioned on the opposed inner surfaces of the limbs 50 and 51 and extending longitudinally of said limbs are straps 56 and 57, the said straps being secured by means of clamping bolts 58, passing through opposite end portions of the straps and through the limbs 50 and 51. The straps 56 and 57 bear on the flattened portions 49 of the shaft 43, and with this construction it will be manifest when the shaft 43 rotates the arm and roller will likewise be rotated. By the provision of the clamping bolts and straps, it will be manifest that the end portion of the U-shaped member carrying the roller may be adjustably secured at various distances from the axes of the shaft 43.

In the operation of the parts thus far described, it will be manifest when the clutch collar 24 is in engagement with the pulley 22 and the latter rotated, that rotary move ment will be imparted to the shaft 17, and I also to the collars 37 and 38 and the worm i 40. rrssnming now that the clutch surit'ace of the collar 38 to the right in l ig. l. is in l engagement with the clutch surface of the l bevel gear 30 it: will be evident that rotary movement will be imparted to said bevel gear. ,Zemembering that the worm ll) 1 meshes with the worm ge: r 41st; and assuming that the arm is moving in the direction indicated by the arrow in Fig. l and is at a position substantially intermediate the limbs 4-5 and 4-6 of the yoke, it will be seen that as the arm continues to move in the direction of the arrow the roller 5? will engage with the limb 45 of the yoki and as the arm con tinues to rotate the yoke will he moved lengthwise ot' the shaft 17 carrying with it the collars 37 and 38, the collar 38 moving from engagement with the clutch surface of the bevel gear 30', while the clutch surface of the collar 27 moves into ei'igaeement wit h the clutch surit'ace ol the bevel gear 529. it will be seen when the arm continues to retate in the same direction that the spring; 5%) which bfilS on one end of the draw head and the adjacent ends of the straps 56 and 57 will be slightly compressed until the roller moves from engagement with the limb 1-5, whereupon continued movement of the roller will move the arm into en 'agemcnt with the limb 46. thus moving the clutch surt'ace ot' the collar 38 to its original position in engagement with the clutch surtace of the bevel gear at).

The medial portions of the end sills 110 are connected by a substantially inverted U shaped support (it), and termed in the central. portion of the support (it) is a circular opei'riiuzg. The support 0 preterably com prises two sections each ot which is pre- Vided with a smni-circular recess. these recesses coiipe 'ating when the sections a re positicned as shown in Fig. 2 ot' the drawing: to provide the circular opening. bet'ore stated. A vertically dis aised sha'tt extends through the opening of the support and is provided with a. grooved collar (2. the groove of which receives the wall of the circular opening. Keyed to that portion oi" the shat t above the collar is a horizontally disposed bevel gear (32, the teeth o't which m sh with the bevel gears 9t) and Ill). The portion of the shaft. below the colla' (it is exteriorly screw-thrcadcd as shown at (31%. 'lhrwaded onto the shaft is an interinrly threaded bushing 6 1-. the said bushing being considerably less in length than the length of the shaft and fixedly secured to the oppo site sides of the bushing and extending longitudinally ot' the base 't'rame are horizontally disposed arms (st and ($5. Depemling: from the opposite end portions of tha arms 64 and 65 are hangers 66 and 67.

lVhat will subsequently be termed a reciprocating mold section is designated by the numeral (35%. This member is substantially crescent-shaped in cross section and in length. corresponds to the length ol the tile to be termed. bixedly secured to the con vex surt'ace ol' the sections (at and corresponding in length to the length of the latter is a. rubber cushion t3!) and lixedly secured to the upper surlace ot the cushion is a block Ttl. The means for securing the block to the cushion and mold section 435- con'iprise bolts 71. which pass through alinine' openings in the mold section. cushion and block. the lower ends oi the said bolts having heads (it) which are arrangzjed in coimtm-sinks in the conrared surlace ol the section (38. the upper ends o'l' said bolts extcmling beyond the blocks and having threaded thereon nuts :2. The block is so cured to the lower end portions ol the baneers by meant-s ot bolts T 3, which pass through transvensc openings termed in the hangerand block.

lly retcrem-c now to l ie'. t that depending trom the medi the end sills ll) are what wi l he termed guide strips H. and exhualine' mltwardly from the opposite ends el' the block Tt) a 'e arms T5 and To best shown in Fig.1 7. the inner end p rtions ot the said arms being connected by means ct pins 7? and journaled in the outer end portions ol th: arms are rollers T9, which b all on the guides 7-l-. \Vith this construction it will be mani'test that the reciprowting' mold sec tion and its parts will be p'uided during: up'- ward and downward movement.

The medial portions ot the uprights T and S are connected by t'l'tlF-ita bars "ill which err tend in a. directii'in tramsreme the base frame. The medial portions of these bars are connected by the opposite ends; ol a platform 80, best shown in hie. ltlxtendinc; transverse the table and lix'cdly secured thereto are railsv a1. as shown in Fin. 1. 'lhl'ee ot these rails are employed and are arranged at the intermediate and oppo:1i"e end portions of the table. ltisinp' upwardly 't'rom the medial portion ct one ol the side bars 5 of the supporting frame is a bracket 91, and tixedly secured to the upper end portim'l ot the bracket is a boxing. E-lecured lo the uprights T and 8 opposite to those adjacent to the bracket til are bcxinggs 852. in alinement with the boxin g ot the bracket. Journaled in the hoxines ot the bracket aml upright are shatts RI, and t4. the said sha'l ts extending: longitudinally ol the l'ramc and slightly below the plane ot the table 80. Keyed to the opposite end portions ot' the shal'ts 81 5 and 8 t and adjacent to the inner sides of the uprights 7 and 8 are sprocket: wheels 85 and 86, and trained over the said will be seen l portions ol subscmicntly sprocket wheels are endless sprocket chains or carriers 87 and 88. Certain of the links of the sprocket chains are of peculiar construction, inasmuch as extensions 89 are formed on the inner sides of certain of said links as best shown in Fig. 6. The extensions 89 of the chains are directly opposite each other and the links provided with said. extensions may be spaced apart for any required distance according to the number of mold sections to be employed. Fixedly secured to the extensions 89 are the opposite ends of a plurality of mold sections 90, the said mold sections 90 being substantially semi-circular in contour and coiiperating with the section 68, when mold sections are in engagement, to present a circular-shaped opening, as best shown in Fig. 5. By reference now to Fig. 1 it will be seen that the chains 87 and 88 are arranged beyond the outer sides of the end rails 81, the upper sides of said chains being substantially in alinement with the upper sides of the rails so that when the shafts 83 and 8e are rotated and also the chains 87 and 88, that the mold sections 90 will be carried over the rails 81 and table 80, the lower sides of said mold sections engaging with the upper sides of the rails as shown in Fig. 1. The means for imparting rotary movement to the mold sections comprises a handle wheel 91, which is secured to one end of the shaft 8 1 as shown in Fig. 1. With this construction it will be manifest that any of the mold sections 90 may he moved to a position in aline ment with the reciprocating mold section 68 and when so positioned the latter may be caused to descend, whereupon the parts will assume the positions shown in Fig. It will be seen when the reciprocating mold section moves into the mold section 90 that the downward pressure produced by the reciprocating mold section will be centered on the rails and table.

Rising from the end portions of the sides 5 of the base frame and adjacent to the uprights 8 are posts 92, the said posts rising to a position above the table 80. The upper end portions of the posts are connected by a cross piece 93 having a centrally disposed boxing, the axis of said boxing being in alinement with one of the mold sections 90 when the latter is moved to a position directly beneath the mold section 68. Slidingly fitted in the boxing is a core 94:, corresponding approximately in length to the length of the base frame and in diameter approximately to the diameter of the circular opening presented by the mold sections when the latter are in engagement. Connecting the medial portions of the posts 02 and directly beneath the cross bar 93 is a similar cross bar (not shown). A similar cross bar connects the adjacent uprights 8 and supported by these cross bars are rollers 95. A rack bar is designated by the numeral 96 and bears on the rollers 95, the said rack bar corresponding in length approximately to the length of the core and terminating at its outer end in an upwardly inclined extension 97, the extremity of which is secured to the outer end portion of the core 94. Extending outwardly from the uprights 8 adjacent to the posts 92 are brackets, in which are journaled the opposite ends of a shaft 99. One end portion of the shaft is provided with a crank handle 100 and keyed to the medial portion of the shaft is a crown gear 101, the teeth of which mesh with the teeth of the rack bar 96. With this construction it will be manifest when one of the mold sections 90 is in alinement with the mold section 68 and the parts in position as shown in Fig. 1 that by turning the crank handle 100 in one direction, the core will pass into the mold sect-ion 90, so that when clay is placed in the mold section 90 and the core positioned therein and the reciprocating mold section moved downwardly the clay will be compressed into a cylinder so that when the crank handle is turned in the opposite direction and the mold withdrawn the formation of the tile will be completed. By reference now to Figs..2 and 11 it will be seen that the mold sections 00 are on the end remotefrom the outer end of the core provided with plates 102, the said plates having openings 103, to receive the free end of the core when the latter extends through the mold section 90, and serving to hold said core against movement when the clay is being compressed.

In order to yieldingly hold the mold section in alinement with the mold sections 68, after the hand wheel 91 has been turned the following construction is employed a-By reference now to Fig. 1 it will be seen that extending through the medial portions of the rails 81 is a shaft 10 and extending radially from the said shaft and fixedly secured thereto are hooks 105. One end portion of the shaft is provided with an operating handle 106, and connecting the operating handle to the cross piece 79 is a helical retractile spring 107. The position of the hooks is such that when the spring 107 is retracted, and the operating handles extend vertically upward the free end portions of the hooks will extend above the plane of the upper sides of the rails 81, and into the path of movement of the mold sections 90. With this construction it will be manifest that when one of the mold sections moves into alinement with the mold sections 68 it will be engaged by the hooks 105, whereby further movement in one direction will be prevented until the operating handle 106 is moved, whereupon the hooks will descend,

thus permitting the hand wheel 91 to be turned to bring the next mold section 90 into alinement with the mold section (38.

.rvrrangred adjacent to the upper ends of the uprights S and extending: transverse the base trame is a shaft 108, and arraiured on ,the medial portion of the said shaft is a the biturcated upper end of an arm 110.;

Rising from one of the end sills 10 is an upright 111.1, the upper end portion of which provided with a lateral pin .llfl, upon which is loosely titted the medial portion of the arm 110. The lower end portion 01? the arm 110 curves outwardly and downwuu'dly from the outer side of the end sill 10, as shown in Figs. 1 and 8. One arm of the lever .10?) normally bears on the downwardly curved portion of the arm 11.0 while another arm of said lever extends to a point adjacent the hangers (36. Extending downwardly and outwardly from one of the hangers (5G is a spring" arm 113, the tree end portion of which is provided with a roller to engage with the adjacent side of the lever 109.

l dxtending outwardly ttrom the upi rights 8 and at a point above the core 941:

are brackets lll. in which are journalcd the opposite ends of a shaft 115. One end of the shaft 115 is provided with a crank handlc no, and fixedly secured tothe medial portion of the shaft is a cam roller 111.7, to engage with the other arm of the lever 10!).

in the operation of the device and assuming that the core is within one of the mold sections (it) and a quantity o'l soft clay or similar plastic material is placed therearound, it will be mam'tcst when motion is imparted to the gear wheel (32, by means ol the bevel gear 80', in the manner bc'l ore dcscribet h it being; assmned that the parts are in position as shown in Fig. l that rotary movement will be imparted to the screw threaded shatt, whereupon the reciprocal in mold section will descend and compress the clay within the mold. When the movable mold section has reached the limit o'l. its downward moven'lentthe roller will enpage with the limb it") of the yoke, thus shifting the position oi the collars 37 and 38 so that the threaded shaft and gear wheel 2 will rotate in the opposite direction, thus raising the movable section. As the movable section moves upwardly and the roller at the end of the spring arm ll engages with the extremity of the adjacent arm of the lever 109, the upwardly inclined arm ot said lever in engagement with the arm 110 will be rocked outwardly, thus imparting a similar movement to that end portion of the arm H0 in ene: grement with the clutch col- I moved 'l'rom engagement with the pulley 22,

whereby rotary movement ol the bevel gears and shat't will cease. lVhen disenwurement between the clutch collar and pulley is e1 l'ectcd. and the shalt IT ceases to rotate. the clutch collar will remain out ol. engagement with the pulley until the sprint: arm lift is pressed inward. whereupon the tree arm lever will be released and the clutch collar moved to normal position by th action of the spring); )3. ll'hen it is desired to ell'ect disengagement between the clutch collar and pulley in order to cause the reciprocatingmold section to stop at any point l'rom the mold section no. the crank handle 116 is turned in one direction whereupon the cam roller llT will rock the tree arm lever thus etl'eclinn' disengagcment between the clutch collar and pulley.

From the foregoing. it is evident'that l have provided a device which is comparas tivcly simple in structure and inexpensive in manut'acturc. embodying 'lcw parts and these so arranged that the danger oi deraiuremcnt will be reduced to a minimum.

1 claim l. in a tile making machine. the combination with a power sha'l t a sectional mold having: one section thcreo't vertic: lly movable, a plurality ot gear wheels loosely mounted on said shaft and conncctml with the movable mold section; ol a plurality of clutch members splincd on the main shalit. and a rotatable means actuated by the main sha'l't' and a sprirug-pressed roller carried by said rotatable means to alternately move said clutch members into and out ol engagement with said gears.

2. in a tile making machine. the combination with a. power shaft, a sectional mold having one section thcreot vertically movable, a plurality ot gear wheels loosely mounted on said shat't and connected with the movable mold section: ot a pluralitv ol 1 clutch i'nembers splincd on the main shaft.

and 1. rotatable arm actuated by the main sha't't having a yicldingly held member to alternately engage with said clutch members to move the latter into and out? ot' cngrae'eruent with said bevel ,egears.

ii. in a tile making machine the combination with a main shaft. ot a plurality oi bevel gear wheels loosely fitted on said sha'tt and provided with clutch surt'aces, a plurality of clutch collars spliued on said shatt. and a U-shaped connection between said clutch collars: ol a rotatable arm actuated by said main sha'l't ha ring; a portion to alternately engage with the limbs ot the U- shaped connection between said collars and serving to move the latter into and out of engagement with said bevel gear wheels.

l l (a.

4. In a tile making machine, the combination with a main shaft, of a plurality of bevel gear wheels loosely fitted on said shaft and provided with clutch surfaces, a plurality of clutch collars splined on said shaft, and a connection between said clutch collars; of a rotatable arm actuated by said shaft and having a yieldingly held roller to alternately engage with opposite portions of the connection between said clutch collar and 10 serving'to move the latter into and out of engagement with said bevel gear Wheels.

In testimony whereof I afiiX my signature in presence of two witnesses.

JACOB L. JOHNSON. Witnesses F. T. RoLosoN, C. G. WrrHERsrooN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D; 0'. 

